now the obama administration must sell this agreement to critics. tahman bradley joins us live from washington with more. tahman? >> reporter: john, good morning to you. the obama administration says this is an important first step. but they know people still need convincing. over the weekend, president obama phoned the israeli prime minister. and secretary of state john kerry will meet with more members of congress. they clinched the deal. iran and six world powers reached a temporary agreement to halt iran's nuclear program. the obama administration is selling it as a game-changer. >> israel will be safer. the region will be safer. iran's 20% uranium will be destroyed. >> reporter: iran will allow daily monitoring of key facilities by u.n. inspectors. in return, the u.s. and allies will ease some economic sanctions, about $7 billion worth. many are skeptical that iran will change. >> it's an historic mistake. >> reporter: israel condemned the deal. was a it leaves in place iran's infrastructure to produce nuclear fuel. some members of congress exp